Pattern-matching mechanism for tapestry-looms.



No. 796,102. PATENTED AUG. 1, 1905l H. WYMAN.

PATTERN MATCHING MEGHANISM PoE TAPESTRY LooMs.

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PATTERNMATCHING MECHANISM FOR TAPESTRY LOOMS.

APPLICATION FILED APB..9, 1904.

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www MZML UNITED STATES PATENT OEEICE.

HORACE WYMAN. OE WORCESTER, MASSACHUSETTS ASSIGNOR TO CROMP- TON a KNOWLES LOOM WORKS, OE WORCESTER, MASSACHUSETTS, A CORPORATION OE MASSACHUSETTS.

PATTERN-MATCHING NIEHANISNI FOR TAPESTRY-LOONIS.

Specification ofvLetters Patent.

Patented Aug. 1, 1905.

Application filet'. April 9, 1904:. Serial No. 202,342.

Machinery for Tapestry-Looms, of which the following is a specification.

My invention relates to improvements in looms for malrlng tapestry carpets in which there is a supplementary warp, with figuresV printed thereon, to be interwoven in the body of the fabric. The supplementary warp is delivered to the loom greatly in the excess of the delivery of the bod y-warps,this excess producing the pile or raised surface as the goods are woven, with the figures prominently showing thereon.

In tapestry carpets the figure should be accurately contained in a definite length of the woven fabric in order to match with the figure of other portions of the same fabric when laid side by side.

The object of my invention is to improve upon` the construction of tapestry-looms for making tapestry carpets as ordinarily made, and more particularly to lprovide mechanism for regulating the delivery of the supplementary warp, having figures printed thereon, in connection with the movement of the take-up roll upon which the woven fabric is wound, so as to weave a definite number of tufts of pile in a definite length of fabric.

My invention consists in certain novel features of'construction of my improvements, as will be hereinafter fully described.

In my improvements there is a main actuator moved at a normal speed by means of a ratchet-and-pawl or other mechanism from a moving part of the loom to positively rotate the delivery or feed roll, around which the printed warp passes on its way to be woven into the fabric. Said main actuator also moves the take-up roll positively to weave a definite number of tufts of pile in a definite length of the fabric and connects positively the movement of the take-up roll and the movement of the delivery-roll of the printed warp. Said main actuator in my improvements, as herein shown and described, moves the delivery-roll through a compound-gear motion, which in this instance consists of a bevelgear loosely mounted on the horizontal shaft ofthe main actuator, a second bevel-gear loose on said shaft,

and a third bevel-gear between two said bevelgears, with its teeth in mesh with both ofsaid bevel-gears, and mounted on a stud having a hub fast on said shaft to rotate therewith.

The revolution of a vertical shaft of the main actuator turns one of the bevel-gears of the compound-gear motion in one direction, and

through the third gear of said compound-gear motion turns the other bevel-gear in the opposite direction vand moves, through a worm connected with said last-mentioned gear, a

\ wheel on the delivery-roll to deliver the printed warp to the loom. Y

The shaft havingthe compound-gear mO- tion thereon above mentioned has thereon a `spur-gear adapted to be turned by other gearing to revolve said shaft and also the third bevel-gear of the compound-gear motion to revolve said gear around the other two bevel-y gears of the compound-gear motion, as here shown, in the same direction as the first bevelgear. The movement of the third bevel-gear will vary the normal movement communicated from the main actuator to the worm and wheel of the delivery-roll proportional to the number of turns which said third gear makes around the two bevel-gears to that of the normal movement of the main actuator. The gearing for turning the spur-gear has a changegear, which may be changed for gears of different sizes, so that the movement of the shaft and the third bevel-gear of the compoundgear motion may be varied in its relation to the normal movement of the main actuator, as desired.

By means of the mechanism above described between the main actuator and the deliveryroll and the means to change the movement of said mechanism to regulate the speed at which the delivery-roll will turn I am enabled to deliver any desired quantity of warp at each motion of the loom with the greatest accuracy.

The main actuator for turning the deliveryroll is adapted to turn the take-up rol'l of the -loom in the same positive way, due allowance being made for the relative speeds at which the delivery-roll and take-up roll turn` for the greater length of warp necessary to be delivered to produce the pile on the face of the fabric, and by combining the mechanisms for turning the delivery-roll and the take-up roll vI am enabled to weave tapestry carpets with figures on their face which will match perfectly one figure with another.

The main actuator is provided with a reversing mechanism, by means of which the take-up roll and the delivery-roll can be moved backward step by step while the loom is being operated to correct any imperfections which may have occurred in weaving.

The printed warp-on its way from the delivery-roll to be woven in the fabric passes through a set of heddles, which raise and lower said warp from one shed tothe other, and in order to keep a tension on said warpin passing from one shed to the opposite shed and to positively hold said warp at each beat of the lay in the different positions of the heddles I provide a movable tension-bar, which moves positively back and forth as the figured warp is slaekened or tightened in the different positions of the harnesses.

I have only shown in the drawings sufiicient parts of a loom with my improvements applied thereto to enable those skilled in the art to which my invention belongs to understand the construction and operation thereof.

Referring to the'drawings, Figure 1 is a plan view of the delivery mechanism of the printed warp and its operating mechanism and also of the take-up roll and the operating mechanism looking in the direction of arrow a, Figs. 2 and 3. Fig. 2 is, on an enlarged scale, a side View of the parts shown in the upper part of Fig. 1 looking in the direction of arrow same figure. Fig. 3 is, on an enlarged scale," a side view of the parts shown at the bottom in Fig. 1 looking in the direction of arrow same figure. Fig. 4 shows, on an enlarged scale, the parts shown at the right in Fig. 1 looking in the direction of arrow c, same figure. Fig. 5 is a central longitudinal vertical section through the lower horizontal shaft shown in Fig. 2 and the mechanism connected therewith. Fig. 6 is a side view of the double-pawl ratchet mechanism shown in Fig. 3 looking in the direction of arrow d, same figure; and Fig. 7 is a detached side view of the change-gearing shown in Fig. 2, taken at a point indicated by line 7 7, Fig. 2, looking in the direction of arrow e, same tigure.

' In the accompanying drawings the main actuator referred to aboveis shown as consisting of the horizontal shaft 1, Fig. 3, mounted in bearings 1 and having the bevelgear 2 on one end meshing with the bevelgear 3 on the lower end of the vertical shaft 4, mounted in bearings 4,and having the bevelgear 5, fast thereon, meshing with the bevelgear 6, fast on the hub 7 of the bevel-gear 7, journaled in bearings 7, and loosely mounted on the shaft 8. A second bevelgear 9 has a hub 9 and is loosely mounted on the shaft 8 and has fast on its hub 9' the worm 10, (see Fig. 5,) which meshes with the wormwheel 11, fast on the end of the journal 12 of the delivery-roll 13. The said parts comprising the main actuator have a movement communicated thereto in either direction through the two ratchet-wheels 14 and 15, Fig. 3, fast on the shaft 1, and the two pawls 16 and 17, pivotally mounted on a pin 18 in one end of an angle-lever 18, loosely mounted on the shaft 1 between the ratchet-wheels 14 and 15. The other arm of said angle-lever 18 is connected bya link 19 with a lever 20, fast, in this instance, on the fulcrum 21 of the lay. (Not shown.) One or the other of the pawls 16 and 17 is moved by the operator out of engagement with its ratchet-wheel 14 or 15, according to the desired direction of movement of the shaft 1 and the mechanism connected therewith.

On the shaft 8, between the two bevel-gears 7 and 9, is fast the hub 22 of a stud 22, on which is loosely mounted a bevel-gear 23, extending between and meshing with the two bevel-gears 7 and 9 and forming the third gear of the compound gearing. (See Fig. 5.) A bolt 23 and washer 23" serve in this instance to hold the bevel-gear 23 loosely on the stud 22. The revolution of the gear 7 in one direction will communicate through the bevelgear 23 a movement to the bevel-gear 9 and worm in an opposite direction.

On the shaft 8 is loosely mounted a sleeve 24', journaled in bearings 24", (see Fig. 5,) having fast on one end thereof a disk 25, having recesses 25 therein to receive the end of a spring-actuated pin 26, having a head 26 thereon, and mounted to have a longitudinal motion in a collar 27, fast on the shaft 8. .(See Fig. 5.) On the extreme end of the shaft 8 is a hand-wheel 29. On the inner end of the sleeve 24 is a spur-gear 24. (See Fig. 5.) By means of the spring-actuated pin 26 and the disk 25 the sleeve 24, having the spurgear 24 thereon, is connected with the shaft 8 to cause said shaft to revolve with said spurgear 24 or is disconnected to allow the shaft 8 to be revolved independently of the gear 24. The spur-gear 24 meshes with a pinion 30, which is mounted on a stud 30', carried on a stand 30, having a hub 30 loosely mounted on the vshaft 8 and having an arm 30" adjustably connected by a bolt 31 with the slotted end 31" of a stand 31, secured to the loom-frame. (See Fig. 7.) The pinion 30 meshes with a change-gear 32, the hub 32 of which is secured by a set-screw 32 on the end of the shaft 33, mounted to revolve in bearings 34. For the gear 32 other gears of different-sizes may be substituted to change the speed of the spur-gear 24 and the shaft 8. On the opposite end of the shaft 33 is fast the hub 35 of a worm-gear 35, which meshes with and is driven by the worm 36, fast on the upper end of the vertical shaft 4. (See Figs. 1 and2.) The revolution of the vertical shaft .4, through worm 36, worm-gear 35, shaft 33,V

79e,1o2 Y 3 change-gear'32, pinion 30, land spur-gear 24, sleeve 24', disk 25, spring-actuated pin 26,y and collar 27, fast on the shaft 8, communicates a rotary motion to the shaft 8 and causes the bevel-gear 33, on the stud 22, having the hub 22 fast' on the shaft 8, as shown in Fig. 5, to revolve with said shaft, and at the same time, through the revolution of the vertical shaft 4, the bevel-gears and 6, and the bevel-gear 7, rotary motion is communicated through bevel-gear 23 to the bevel-gear 9 and the worm 10 to turn the wheel 11 on the journal 12 of the delivery-roll 13.., The turning of the shaft 8, carrying the intermediate gear 23 one turn around the gear'7 in the same direction 'as the gear 7 rotates,\will cause the gear 9 to lose two turns of the rotation of the gear 7 in the transmission and diininish the speed of rotation of the delivery-rollfl3.

On one end of the lower horizontal shaft 1 of the main actuator mechanism is fast a worm 37, (see Fig. 3,) which meshes with and turns a worm-gear 38,v fast on the journal l39 of the take-up roll 40, onto which the woven,-

fabric passes from the cloth-plate 41.

mounted in suitable bearings,'the printed warp 43 (shown by broken lines in Fig..4)vpasses around the let-0H" or delivery roll 13 and over a roll 45, held in frictional engagement therewith, to the tension-rod 46and from thence through the harness 47 to the body of the fabric. (Not shown.) The roll has journals 45, extending out from its ends,which are supported on the upper edges of inclined arms 45, each having a hub rotatably mounted on a stud 45*L and adjustably secured at its inner end by a bolt 45N, extending through a slot 45h in the lower end of ya bracket 45h, securedto the frame. (See Fig. 4.) The tension-rod 46 is in this instance supported in the lower end of an arm 48, the hub 48' of which is mounted on a stud 49. Extending up from the hub 48 is an arm 48, having a slot 48 therein, with which is connected a stud 50 on the end of a connector or link 50. The other end of said connector 50 is pivotally connected with an arm 51, the hub 51 of which is fast on a rock-shaft 52. On said rock-shaft 52 is fast an arm 53, which is pivotally connected at 53 by a link 54 to the upper end of the harness 47, as shown in Fig. 4; The usual up-anddown movement of the harness 47, common to looms, to form sheds as required by the movement of the loom in weaving, will at the same time, through link 54, arm 53, rock-shaft 52, arm 51, link 50, and arm 48, communicate movement to the arm 48 to regulate the tension of the rod 46 on the'printed warp 43.

On one of the journals 42 of the beam 42 is fast a grooved pulley 55, around which passes a band 56. One end of said band is connected with a stationary hook 57, and the other end of said band is connected with a spiral spring 58, which spring is connected by a link 59 with the hook57. -A By means ofthe band 56 and spring 58 tension is applied to the pulley and the beam 42.

`From the above description in connection ywith the drawings the operation of my improvements will be readily understood by with the gearing so proportioned, through the travel of worm 36, worm-wheel 35, shaft 33,

gears 32 and 24, thatv twenty rotations of gear l 7 and one rotation of shaft 8 will transmit eighteen rotations tothe gear 9 and with the change-gear 32, having forty teeth thereon, to turn the shaft 8. If a change of one tooth ,in said gear is made, it will make a change of one-fortiethof a rotation of the shaft 8 and f will cause the twenty rotations of gear 7 to From the beam 42, having journals 42 lose orgain two-fortieths or ve-hundredths part vof a rotation transmitted to gear 9, according to whether the change-gear 32 is made with one tooth more or withone tooth less than the change-gear having forty teeth. Five-hundredths part of a rotation ofthe eighteen'rotations of gear 9 will make a change of one iny three hundred and sixty (360) parts.y For example, if the design of a carpet is thirty-six inches long and has three hundred and sixty rows of tufts or piles in its whole length each change of a tooth of the change-gear 32 will change the length of the woven design one three-hundred-and-sixtieth, or one tuft in the Whole length.

It will be understood that the details of construction of my improvements may be varied, if desired, from what .is shown and described.

The compound gearing instead of being composed of toothed gearing may be made of frictional gearing or surfaces and instead of being composed of the particular parts shown and described may be any equivalent mechanism by which the movement of the delivery-rollfrom the main actuator may be varied.

I do not limitmy invention to tapestry-carpet looms, as my improvements may be used on other kinds of looms.

Having thus described my invention, what 'I claim as new, and desire to secure by Letters Patent, is

1. The combination with a main actuating mechanism to normally rotate a roll or spool, of controlling mechanism to move said roll or spool at -a changed speed from its normal movement, and intermediate change-gearing to adjust said speed as desired, substantially as shown and described.

2. In a loom having a delivery roll of a warp-delivery mechanism, a normally movmechanism, and intermediate mechanism to turn said delivery-roll, and means to adjust the speed of the intermediate mechanism to vary the speed of said roll, substantially as shown and described.

4:. In a loom provided with a warp-delivery roll, a normally moving main actuating-shaft, and an intermediate mechanism. and changeable gearing by which the combined movement of the actuating-shaft and intermediate mechanism may be varied, substantially as shown and described.

5. In a loom provided with a warp-delivery roll and means to move it, a main drivingshaft, and a secondary mechanism, and a series of change-gearing to modify the movement of the main shaft, to move said deliveryroll, substantially as shown and described.

6. In a loom provided with a warp-delivery roll, a normally-moving main shaft, and a modified moving intermediate mechanism, and means to vary the speed of said intermediate mechanism, to produce any desired movement of the delivery-roll, substantially as shown and described.

` 7. Amain actuating means to turn a deliveryroll,secondary or intermediate mechanism to modify the movement of said deliveryroll, and intermediate change-gearing to produce any desired relative movement between the main actuating means and the deliveryroll, substantially as shown and described.

8. In aloom, a delivery-roll, a take-up roll, and intermediate actuating mechanism between the two rolls, with means to change the relative movements of said rolls, to accurately deliver a definite amount of material, from the delivery-roll for a definite length of the fabric, measured on the take-up roll, substantially as shown and described.

9. In a loom, a positively-moving deliveryroll, a take-up roll, and intermediate mechanism between the two rolls provided with a ratchet-and-pawl mechanism to move said rolls in one direction, and a reversely-acting ratchet-and-pawl mechanism to move said rolls in an opposite direction, substantially as shown and described.

l0. In a loom provided with a supplementary warp, a positively-moving delivery-roll therefor, a movable tension-bar for said supplementary warp, to positively hold said warp at each beat of the lay for the different positions of the harness of said supplementary warp, substantially as shown and described.

HORACE IVYMAN. Witnesses:

J. C. DEWEY, M. HAAs. 

